The Pole drew the ire of some fans when the video went to Twitter, and responded.
The Swiss is excited to work with the proven coach.
Coach Patrick Mouratoglou says US Open champion's style reminiscent of Roger Federer.
Some coaching news from Guadalajara...
Euphoria star plays a tennis coach in new romantic comedy Challengers.
The Federation told Seppi it would have been a waste to use a wild card on a retiring player.
Russian player Anastasia Gasanova rips Ukrainians in a social media post.
